Computer Science – Performance
Scientific paper
Dec 1997
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1997aas...191.1001s&link_type=abstract
American Astronomical Society, 191st AAS Meeting, #10.01; Bulletin of the American Astronomical Society, Vol. 29, p.1225
Computer Science
Performance
Scientific paper
The Near Infrared Camera and Multi-Object Spectrometer (NICMOS) on the Hubble Space Telescope includes a coronagraph in the f/45 camera. Under the HST Guaranteed Time Observing program the NICMOS IDT will be carrying out coronagraphic imaging surveys of selected M-dwarfs, young stars and main sequence stars with IR excesses to search for brown dwarf and giant planet companions, and protoplanetary disks. The performance levels of the NICMOS coronagraph were determined during the on-orbit instrumental calibration carried out the Servicing Mission Observatory Verification phase of the mission. To obtain optimal performance in lowering both the diffracted energy in the regions surrounding bright star, by reducing the high spatial frequency components of the occulted core of the PSF, and down stream scattering a number of adjustments were made to coronagraphic operations. With those improvements in place we will be able to reduce the background from the unocculted wings of a centrally occulted stellar PSF by factors of 1E-5 near the edge of the coronagraphic hole (375 mas radius) to 1E-6 at 1" using a differential imaging strategy. Details of the calibration and performance levels of the NICMOS coronagraph and their implications for our GTO coronagraphic science programs are presented.
No associations
LandOfFree
On-Orbit Performance of the NICMOS Coronagraph does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with On-Orbit Performance of the NICMOS Coronagraph, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and On-Orbit Performance of the NICMOS Coronagraph will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-1172907